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Download the 12-Hole Eddy Current Bolthole Standards Chart

All PH Tool Reference Standards can be manufactured in a variety of alloys and shipped to you fast. We’ve created a chart of one of our most popular products – the 12-Hole Eddy Current Bolthole Standard – to show the various alloys and notch configurations you can choose.

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About PH Tool

PH Tool Reference Standards, headquartered in Pipersville, PA, maintains a staff of skilled toolmakers, machinists, technicians, and professional management personnel (40 people and counting) dedicated to the development and manufacture of the finest quality Reference Standards available today. Our robust growth and excellent reputation in the NDT world can be attributed to our emphasis on quality, attention to detail, and innovative approaches to the most challenging requirements of our valued customers.